Haven't seen the movie yet (though I'm highly anxious too!), one thing I keep hearing from people's reactions about the movie was how the marketing didn't give away ANY of the plot. The level of secrecy they have maintained is to be commended. None of the secret plot twists or surprises, should there be any, have been spoiled. Whatever info people extracted from the trailers and marketing gave them little info as to what was really about to happen.
Compare Star Wars: The Force Awakens and Mass Effect 2 and 3's marketing. We basically knew the whole plot, all the characters, and even most of the twists and turns of the games before we even got to play. The "surprises" like the Normandy's destruction, the identity of Archangel, the epicness of Leaving Earth ... all those moments were spoiled before the games even hit the shelves. We had a pretty good idea as to what species we were recruiting and planets we were visiting in ME3 also.
Though I have to say, it looks like Bioware is taking a page out of J.J Abrams and Disney's playbook with Mass Effect Andromeda. Practically radio silence since the game started development in November 2012, save for some trailers and concept art.
The radio silence might be frustrating, but here's hoping it's for the best